Diterpenes constituents of Tripterygium wilfordii / 药学学报

<p><b>AIM</b>To study the chemical constituents of Tripterygium wilfordii Hook. F.</p><p><b>METHODS</b>Various column chromatographies with silica gel were used for the isolation and purification. The structures of compounds were established on the basis of its IR, MS, UV, 1H NMR, 13C NMR and HRMS, 1H-1H COSY, 1H-13C COSY and NOESY.</p><p><b>RESULTS</b>Four diterpenoids were isolated: 16-hydroxytriptolide (I), triptolidenol (II), tripdiolide (III), 2-epitripdiolide (IV).</p><p><b>CONCLUSION</b>Compound IV is a new diterpenoid.</p>